Color

#331b36

#331b36
hex#331b36
rgbrgb(51, 27, 54)
hslhsl(293, 33%, 16%)
oklchoklch(0.267 0.058 323)
Closest name: Nightly Voyager (#391531)Relative luminance 0.0175

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#1e361b

#261b36 · #361b2c

#36331b · #1b3633

Split-complementary

Open in tool →

#2c361b · #1b3626

#36261b · #1e361b · #1b2c36

Contrast

#331b36 as textRatioAAAA largeAAAFix
Aaon white
15.55:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #a259ab as the text (4.55:1)
  • AAA: use #b982c0 as the text (7.02:1)
  • AA: or shift the background to #8a8a8a (4.5:1)
  • AAA: or shift the background to #b0b0b0 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331b36 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#331b36 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331b36
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #331b36 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331b36-c19fc1-a1cb62-2d1f29-ece9f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md